Takeuchi Mini Excavator TB215R (No.215000003~). Operator's Manual - page 2

 

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Takeuchi Mini Excavator TB215R (No.215000003~). Operator's Manual - page 2

 

 

SERVICE DATA

SPECIFICATION TABLES

3

2

SPECIFICATION TABLES

2B0AX003

Engine

Hydraulic system

Model

Yanmar 3TNV70

Type

4-cycle, vertical, water-cooled, in-line, 3-cylinder, 

indirect injection

Cylinders

Number of cylinders

Quantity

3

Bore

mm (in.)

70 (2.76)

Stroke

mm (in.)

74 (2.91)

Total displacement

mL (cu. in.)

854 (52.1)

Maximum torque

N·m (ft-lb)

48.2 to 52.6 (35.6 to 38.8)

min

-1

 (rpm)

1800 (1800)

Specific fuel consumption (at rated output)

g/(kW·h) 

(lb/hp-hr)

280 (0.46)

Fuel/air cleaner

Centrifugal, filter paper-type

Cooling system

Fan

Exhaust system

Radiator

Pressurized

Starting system

Voltage

V

12

Output

kW

1.0

Generator

Voltage

V

12

Output

kW

0.48

Battery

Voltage

V

12

Capacity

A·h

38

Quantity

1

Hydraulic pump drive system

Engine direct coupling

Hydraulic pump

Type

Variable displacement type double axial piston 

+ double gear

Quantity

1

Delivery

P1

L/min 

(US gal/min)

16.8 (4.44)

P2

L/min 

(US gal/min)

16.8 (4.44)

P3

L/min 

(US gal/min)

10.8 (2.85)

P4

L/min 

(US gal/min)

6.5 (1.72)

Hydraulic pump control system

Total horsepower control

Main relief valve pressure setting

MPa (psi)

21.0 (3050)

MPa (psi)

21.0 (3050)

MPa (psi)

20.0 (2900)

MPa (psi)

3.4 (490)

Hydraulic tank pressure

Pressure tank

Control valve

Type

Directional control valve with 10 valves in series

Operation type

-

Hydraulic oil filter

Type

Glass fiber filter type

Filter precision

BETA10 = 1.4

Installation position

Return circuit (in hydraulic tank)

Hydraulic oil cooler

Cooling system

Air cooling

Radiation surface area

m

2

 (ft

2

)

1.45 (15.6)

SERVICE DATA

SPECIFICATION TABLES

4

2

SPECIFICATION TABLES

2B0AX003

Operating device

Slew equipment

Cab

Position

Center

Construction

Suspension seat

Cab or canopy

Construction

Canopy with steel support columns

Control levers and pedals

Shifting operation

Variable travel speed switch 

(handle grip of operating lever)

Travel operation

Mechanical system, 2 levers

Slew operation

Hydraulic pilot-operated

Arm operation

Hydraulic pilot-operated

Bucket operation

Hydraulic pilot-operated

Boom operation

Hydraulic pilot-operated

Boom swing operation

Hydraulic pilot-operated, pedal-operated system

Other

Blade, spanner function operation: 

Mechanical, lever-operated system

Auxiliary line piping operation: 

Mechanical, pedal-operated system

Instruments, switches

Water temperature gauge, fuel gauge, 

low fuel level warning indicator, clock, hour meter, 

charge, engine oil, water temperature, glow, 

and 2nd speed travel

Lighting device

Headlight, boom light (12V-55W H3 halogen bulb)

Warning, safety devices

Horn (12 V, 110 dB)

Others

-

Slew bearing

Type

Ball bearing-type

Slew motor

Type

Differential reduction gear type, 

internal trochoid gear motor

Quantity

1

Reduction gears

Type

None (pinion-linked)

Slew brake

Type

Brake valve with a shockless relief

Quantity

1

Slew parking brake

Type

Wet friction plate type

Slew lock

Type

-

SERVICE DATA

SPECIFICATION TABLES

5

2

SPECIFICATION TABLES

2B0AX003

Lower machinery

Power transmission device

Travel motor

Type

Variable displacement (2-speed) piston motor, 

with counterbalance valve

Quantity

2

Reduction gears

Type

Epicyclic gearing (2-stage)

Travel brake

Type

Counterbalance valve, differential delay type

Parking brake

Type

Wet friction plate type

Undercarriage

Track 
shoe

 215000003 

to 215002407

Type

Rubber crawler

Number of core metal 
(on one side)

Quantity

68

Shoe width

mm (in.)

230 (9.06)

Lug height

mm (in.)

25 (0.91)

Type

Steel crawler, double grouser

Number of shoes 
(on one side)

Quantity

35

Shoe width

mm (in.)

230 (9.06)

Grouser height

mm (in.)

15 (0.65)

 from 

215002408

Type

Rubber crawler

Number of core metal 
(on one side)

Quantity

70

Shoe width

mm (in.)

230 (9.06)

Lug height

mm (in.)

25 (0.91)

Type

Steel crawler, double grouser

Number of shoes 
(on one side)

Quantity

36

Shoe width

mm (in.)

-

Grouser height

mm (in.)

15 (0.65)

Roller

Carrier roller 
(on one side)

Quantity

2 (slide plate)

Track roller 
(on one side)

Quantity

3

Track adjuster

Type

Grease cylinder type (with cushion spring)

Track gauge extension mechanism

Hydraulic system

SERVICE DATA

SPECIFICATION TABLES

6

2

SPECIFICATION TABLES

2B0AX003

Working equipment

Working dimensions (Standard arm)

Main structure

Backhoe attachment

Bucket capacity

Heaped capacity

m

3

 (ft

3

)

0.038 (1.34)

Struck capacity

m

3

 (ft

3

)

0.028 (0.99)

Bucket width

Standard

mm (in.)

405 (16.0)

With side cutter

mm (in.)

435 (17.1)

Bucket mass

kg (lb)

34 (75)

Boom length

mm (in.)

1705 (67.1)

Arm length

Standard

mm (in.)

930 (36.6)

Bucket wrist radius

mm (in.)

520 (20.5)

Bucket wrist angle

deg.

190

Boom swing angle

Left

deg.

70

Right

deg.

50

Eccentricity of boom swing pivot

mm (in.)

50 (2.0)

Maximum reach

mm (in.)

3815 (150.2)

Maximum reach at ground reference plane

mm (in.)

3760 (148)

Minimum radius of ground level finishing

mm (in.)

1325 (52.2)

Maximum digging depth

Rubber crawler

mm (in.)

2190 (86.2)

Steel crawler

mm (in.)

2200 (86.6)

Reach at maximum digging depth

mm (in.)

1840 (72.4)

Maximum vertical digging depth

Rubber crawler

mm (in.)

1780 (70.1)

Steel crawler

mm (in.)

1790 (70.5)

Maximum height of cutting edge

Rubber crawler

mm (in.)

3430 (135)

Steel crawler

mm (in.)

3420 (134.6)

Reach at maximum height

mm (in.)

1845 (72.6)

Maximum dumping height

Rubber crawler

mm (in.)

2400 (94.5)

Steel crawler

mm (in.)

2390 (94.1)

Reach at maximum dumping height

mm (in.)

1725 (67.9)

Minimum dumping height

Rubber crawler

mm (in.)

835 (32.9)

Steel crawler

mm (in.)

825 (32.5)

Minimum radius of equipment and attachment

mm (in.)

1450 (57.1)

Minimum radius of equipment at maximum front offset

mm (in.)

1185 (46.7)

Overall height at minimum radius of equipment and attachment

mm (in.)

2515 (99)

Overall height of equipment at maximum front offset

mm (in.)

2515 (99)

Max. bucket offset distance

Left

mm (in.)

395 (15.6)

Right

mm (in.)

555 (21.9)

Boom

Integrated hydraulic cylinder, 

drive swing type

Arm

-

Bucket

Type

-

Number of teeth

Quantity

3

SERVICE DATA

SPECIFICATION TABLES

7

2

SPECIFICATION TABLES

2B0AX003

Hydraulic cylinder

Digging force

Boom cylinder

Number of cylinders

Quantity

1

Bore

mm (in.)

60 (2.4)

Stroke

mm (in.)

480 (18.9)

Arm cylinder

Number of cylinders

Quantity

1

Bore

mm (in.)

60 (2.4)

Stroke

mm (in.)

385 (15.2)

Bucket cylinder

Number of cylinders

Quantity

1

Bore

mm (in.)

50 (2)

Stroke

mm (in.)

355 (14)

Swing cylinder

Number of cylinders

Quantity

1

Bore

mm (in.)

60 (2.4)

Stroke

mm (in.)

340 (13.4)

Maximum digging force

Bucket cylinder

kN (lbf)

14 (3150)

Arm cylinder

kN (lbf)

9.5 (2140)

Maximum lifting force

Boom cylinder

kN (lbf)

7.7 (1730)

Attachment (optional)

-

SERVICE DATA

SPECIFICATION TABLES

8

2

SPECIFICATION TABLES

2B0AX003

Dozer blade

Type

Straight type

Operation type

Hydraulic hoisting type

Dozer blade cylinder

Number of cylinders

Quantity

1

Bore

mm (in.)

60 (2.4)

Stroke

mm (in.)

120 (4.7)

Dimensions

Dozer blade dimensions

Width

mm (in.)

1300 (51.2)

Height

mm (in.)

Standard 
blade

Rubber 
crawler

250 (9.8)

Steel 
crawler

205 (8.1)

mm (in.)

Long blade

Rubber 
crawler

310 (12.2)

Steel 
crawler

300 (11.8)

Cutting angle

deg.

55

Distance between the front end of the dozer blade and the axis 
of rotation

mm (in.)

Standard blade

855 (33.6)

mm (in.)

Long blade

1200 (47.2)

Dozer blade maximum lifting

mm (in.)

Standard 
blade

Rubber 
crawler

215 (8.5)

Steel 
crawler

205 (8.1)

mm (in.)

Long blade

Rubber 
crawler

360 (14.2)

Steel 
crawler

350 (13.8)

Dozer blade maximum lowering

mm (in.)

Standard 
blade

Rubber 
crawler

210 (8.3)

Steel 
crawler

220 (8.7)

mm (in.)

Long blade

Rubber 
crawler

365 (14.4)

Steel 
crawler

375 (14.8)

Dozer blade approach angle

deg.

Standard 
blade

Rubber 
crawler

31

Steel 
crawler

29

Long blade

Rubber 
crawler

30

Steel 
crawler

29

SERVICE DATA

TABLE OF MASSES

1

2

TABLE OF MASSES

2B1AX00

TABLE OF MASSES

Upper structure

kg (lb.)

Part name

Remarks

Mass

Engine

Dry mass

103 (227)

Radiator

With assembly parts attached

13 (28)

Main pump

13 (29)

Gear pump

Hydraulic tank

With assembly parts attached

20 (43)

Fuel tank

With assembly parts attached

3 (6)

Control valve 
(2nd, 3rd auxiliary line piping specifications)

With adapter attached

38 (84)

Pilot valve

2 (4)

Slew motor

22 (49)

Cab

Canopy

With roof attached

48 (105)

Counterweight

100 (220)

Counterweight (with added weight)

Boom bracket

30 (65)

Swing cylinder

17 (37)

Lower structure

kg (lb.)

Part name

Remarks

Mass

Swivel joint

12 (27)

Slew bearing

18 (40)

Rubber crawler

One side

55 (120)

Steel crawler

One side

Segmented rubber crawler

Travel motor

18 (40)

Carrier roller

Track roller

3 (7)

Front idler

14 (31)

Track adjuster

6 (12)

Dozer blade

50 (111)

Dozer blade cylinder

11 (23)

Spanner cylinder

6.4 (14.1)

Hoe attachment

kg (lb.)

Part name

Remarks

Mass

Boom

57 (125)

Arm

31 (68)

Arm (middle model)

Arm (long model)

Bucket (450-mm-wide model)

With teeth

34 (76)

Boom cylinder

20 (44)

Arm cylinder

17 (37)

Bucket cylinder

9 (20)

SERVICE DATA

LUBRICANT AND FUEL CHART

1

2

LUBRICANT AND FUEL CHART

2C0AX002

LUBRICANT AND FUEL CHART

Select the appropriate fuel, lubricant, and grease according to temperature by referring to the table below.
• Regardless of the specified time, change the oil if it becomes too dirty or degraded.
• When refilling, never mix oils of different brands. If a brand is to be changed, replace all of the fuel/oil.

*

If the ratio of traveling time to total operating time is high, replace the gear oil earlier than the specified time.

**

For water, use tap water (soft). Do not use well or river water. 
When the ambient temperature drops below 0°C (32°F), add coolant (antifreeze). Follow the coolant manufactur-
er’s instructions to determine the mixture ratio.

***

The replacement interval for hydraulic oil depends on the type of oil being used. New machines are shipped from
the factory with the Takeuchi genuine hydraulic oil 46. This manual describes when to replace the hydraulic oil
assuming that this Takeuchi oil is used. When a conventional anti-wear hydraulic oil is used, replace it every 2000
hours.

API Standards:

American Petroleum Institute

ACEA Standards: European Automobile Manufacturers’ Association
SAE Standard:

SAE International

®

 (Society of Automotive Engineers)

JASO Standards: Japanese Automotive Standards Organization

Part

Type

Selection by air temperature

-4

14

32 50

68

86 104°F

-20 -10

0

10

20

30

40°C

When to change/

replenish

Capacity

Engine oil pan

Diesel engine oil
API: CD class
ACEA: E3/E4/E5 class
JASO:  DH1 class

 

Every 250 hrs.

Upper limit: 
2.8 L (3.0 US qt.)
Lower limit: 
1.5 L (1.6 US qt.)

SAE 10W-30

SAE 15W-40

Hydraulic tank

Takeuchi genuine 
hydraulic oil 46

Every 4000 hrs.***

Total amount of oil: 
24 L (6.3 US gal.)
Tank level capacity: 
16.1 L (4.3 US gal)

ISO VG46

Anti-wear hydrau-
lic oil

Every 2000 hrs.***

ISO VG32

ISO VG46

ISO VG68

Engine cooling 
system

Cooling water 
(water + coolant)**
SAE-J814C, J1034

Every 2000 hrs.

3.9 L (4.1 US qt.)

Mixture of 50% coolant

Mixture of 30% coolant

Travel reduction 
gear

Gear oil
API: GL-4

SAE 90

Every 1000 hrs. 
after the first 250 
hrs.*

0.33 L 
(0.35 US qt.)

Track roller

Gear oil

SAE 90

0.060 L (2.0 fl. oz.)

Idler

Gear oil

SAE 90

0.045 L (1.5 fl. oz.)

Slew motor pinion

Lithium grease 
EP-2
NLGI No. 2

Every 50 hrs.

As required

Slew bearing

Every 50 hrs.

Working equip-
ment

Daily or every 10 
hrs.

Levers

When required

SERVICE DATA

LUBRICANT AND FUEL CHART

2

2

LUBRICANT AND FUEL CHART

2C0AX002

Diesel fuel standards

Use a diesel fuel that is compliant with any of the stan-
dards listed below. The table below shows standards
from various countries/regions. 

Diesel fuel standards

Country/Region

ASTM D975
No. 1-D, S15
No. 2-D, S15

USA

Canada

EN590: 2009

EU

ISO 8217 DMX

International standard

BS 2869-A1 (or A2)

UK

JIS K2204 Grade, 2-go

Japan

KSM-2610

Korea

GB252

China

Part

Type

Capacity

Fuel tank

Diesel fuel

To maintain the performance and service life of the engine, 
always use clean and high-quality fuel.
• To avoid freezing in cold climates, use a light oil that still

functions when the temperature is at least 12°C (54°F) be-
low the lowest expected ambient temperature.

• Use a light oil with a cetane number of 45 or higher. When

operating at a very low temperature or at a high altitude, a
higher cetane number fuel will be required.

• Use fuel with an overall sulfur content below 0.5%. Be sure

to use fuel with an ultra-low sulfur content for applications
in the U.S. or Canada, in particular. 

• The use of fuel containing a high sulfur content may cause

sulfuric acid corrosion to occur inside the cylinder.

• Do not mix fuel with any kerosene, used engine oil, or left-

over fuel.

• Poor quality fuel can degrade engine performance. It can

also damage the engine.

• Refrain from adding additives to the fuel. Some fuel addi-

tives can degrade engine performance.

22 L (5.8 US gal.)

SERVICE DATA

PERFORMANCE CRITERIA

1

2

PERFORMANCE CRITERIA

2D0AX002

PERFORMANCE CRITERIA

Standard values table

Item

Standard value

Allowable value

Engine speed

Idling

min

-1

 

(rpm)

+100

1060

-100

(

+100

1060

-100

)

Maximum R.P.M.

min

-1

 

(rpm)

+50

2560

-50

(

+50

2560

-50

)

Hydraulic oil pres-
sure

Boom

MPa (psi)

+1.2

21.0

-0.3

(

+145

3046

-44

)

Arm

MPa (psi)

+1.2

21.0

-0.3

(

+145

3046

-44

)

Dozer blade

MPa (psi)

+1.2

20.0

-0.3

(

+145

2901

-44

)

Slew

MPa (psi)

+3.1

13.4

-1.0

(

+290

1943

-145

)

Pilot pressure

MPa (psi)

+0.4

3.4

-0.3

(

+58

493

-44

)

Cylinder speed

Boom cylinder

Retracted

s

+0.4

2.1

-0.4

2.7

Extended

s

+0.4

2.2

-0.4

2.8

Retracted

s

Extended

s

Arm cylinder

Retracted

s

+0.4

2.7

-0.4

3.4

Extended

s

+0.4

2.9

-0.4

3.6

Bucket cylin-
der

Retracted

s

+0.4

1.8

-0.4

2.4

Extended

s

+0.4

2.5

-0.4

3.2

Swing cylinder

Retracted

s

+0.7

5.3

-0.7

6.5

Extended

s

+0.7

5.0

-0.7

6.2

Retracted

s

Extended

s

Dozer blade 
cylinder

Retracted

s

+0.4

2.3

-0.4

2.9

Extended

s

+0.4

2.4

-0.4

3.0

Spanner cylin-
der

Retracted

s

+0.7

3.8

-0.7

4.9

Extended

s

+0.7

3.8

-0.7

4.9

Slew time

Normal speed

s

+0.8

12.7

-0.8

14.8

Low speed

s

Overrun when slewing stops

mm (in.)

+20

33

-20

(

+0.8

1.3

-0.8

)

67 (2.6)

Natural travel drop

mm (in.)

0.0

(

0.0

)

Natural slew drop

Slew bearing

mm (in.)

0.0

(

0.0

)

Swing cylinder

mm (in.)

+0.0

5.0

-5.0

(

+0.0

0.2

-0.2

)

10.0 (0.4)

Travel speed 10 m 
(32.8 ft.)

1st

Rubber

s

+1.2

16.0

-1.2

18.8

Steel

s

2nd

Rubber

s

+1.0

9.0

-1.0

11.3

Steel

s

Travel speed 
(5 revs.)

1st

Rubber

s

+1.2

26.1

-1.2

29.9

Steel

s

2nd

Rubber

s

+0.8

14.3

-0.8

17.1

Steel

s

Straight-ahead traveling

mm (in.)

+125

0

0

(

+4.9

0

0

)

SERVICE DATA

PERFORMANCE CRITERIA

2

2

PERFORMANCE CRITERIA

2D0AX002

Straight travel func-
tion check

Bucket

To be moved forward using simultaneous 

operation

Arm

Boom

Dozer blade

Bucket cylinder speed

Retracted

s

+0.8

2.9

-0.8

4.0

Natural cylinder 
drop

Boom cylinder

mm (in.)

0

5

-5

(

0.0

0.2

-0.2

)

10 (0.4)

Arm cylinder

mm (in.)

0

5

-5

(

0.0

0.2

-0.2

)

10 (0.4)

Bucket cylinder

mm (in.)

0

3

-3

(

0.0

0.1

-0.1

)

6 (0.2)

Dozer blade cylinder

mm (in.)

0

2

-2

(

0.0

0.1

-0.1

)

4 (0.2)

Bucket tip

mm (in.)

0

70

-70

(

0.0

2.8

-2.8

)

140 (5.5)

Backlash

mm (in.)

+15

20

-15

(

+0.6

0.8

-0.6

)

40 (1.6)

Lever play

Right control lever

mm (in.)

0

4

-4

(

0.0

0.2

-0.2

)

Left control lever

mm (in.)

0

4

-4

(

0.0

0.2

-0.2

)

Travel lever

mm (in.)

0

22

-22

(

0.0

0.9

-0.9

)

Dozer blade lever

mm (in.)

0

35

-35

(

0.0

1.4

-1.4

)

Lever control force

Swing lever

N (lbf)

+15

75

-15

(

+3.4

16.9

-3.4

)

Travel lever

N (lbf)

+4

15

-4

(

+0.9

3.4

-0.9

)

Dozer blade lever

N (lbf)

+10

30

-10

(

+2.2

6.7

-2.2

)

Slew bearing play

mm (in.)

+0.4

0.5

-0.4

(

+0.02

0.02

-0.02

)

1.5 (0.1)

Track tension

Rubber

mm (in.)

59 to 64 (2.3 to 2.5)

Rubber pads

mm (in.)

Steel

mm (in.)

SERVICE DATA

PERFORMANCE CRITERIA

3

2

PERFORMANCE CRITERIA

2D0AX002

Hydraulic pump assignment table

Pump P1

Pump P2

Pump P3

Pump P4

P1

Boom swing, 1st auxiliary line piping, right travel, 
boom, bucket

16.8 L/min. (4.4 US gal/min.)

P2

Boom swing, 1st auxiliary line piping, arm, left travel 16.8 L/min. (4.4 US gal/min.)

P3

Slew, blade, 2nd auxiliary line piping, 3rd auxiliary 
line piping (right)

10.8 L/min. (2.9 US gal/min.)

P4

Pilot pressure, travel speed switching, 3rd auxiliary 
line piping (left)

6.5 L/min. (1.7 US gal/min.)

Boom swing

Pressure: 21.0 MPa (3045 PSI)

Test port A1

1st auxiliary line piping

Pressure: 21.0 MPa (3045 PSI)

Test port A1

Right travel

Pressure: 21.0 MPa (3045 PSI)

Test port A1

Boom

Pressure: 21.0 MPa (3045 PSI)

Test port A1

Bucket

Pressure: 21.0 MPa (3045 PSI)

Test port A1

Boom swing

Pressure: 21.0 MPa (3045 PSI)

Test port A2

1st auxiliary line piping

Pressure: 21.0 MPa (3045 PSI)

Test port A2

Arm

Pressure: 21.0 MPa (3045 PSI)

Test port A2

Left travel

Pressure: 21.0 MPa (3045 PSI)

Test port A2

Slew

Pressure: 13.4 MPa (1943 PSI)

Test port A3

Dozer blade

Pressure: 20.0 MPa (2900 PSI)

Test port A3

2nd auxiliary line piping

Pressure: 20.0 MPa (2900 PSI)

Test port A3

3rd auxiliary line piping (right) Pressure: 20.0 MPa (2900 PSI)

Test port A3

Pilot pressure

Pressure: 3.4 MPa (493 PSI)

Test port P4

3rd auxiliary line piping (left)

Pressure: 3.4 MPa (493 PSI)

Test port P4

Travel speed switching

Pressure: 3.4 MPa (493 PSI)

Test port P4

SERVICE DATA

PERFORMANCE CRITERIA

4

2

PERFORMANCE CRITERIA

2D0AX002

Methods for inspecting performance

Hydraulic oil pressure (Boom, arm, dozer blade) 

Measurement method

• Engine:

Maximum R.P.M.

• Hydraulic oil temp.: 50°C to 60°C (122°F to 140°F)
• Install a pressure gauge on the pressure detection

port. Operate the hydraulic circuit to be tested, and
measure the relief pressure.

Adjustment method

1. Loosen the locknut (2), and turn the setscrew (1) to

adjust the set pressure.

• Turn the setscrew clockwise to increase the set

pressure.

• Turn the setscrew counterclockwise to decrease

the set pressure.

2. In order to keep the setscrew (1) from turning after

the pressure has been adjusted, tighten the locknut
(2) while holding the setscrew (1) firmly in place.

Lock nut: 30 ± 2 N·m (22.1±1.5 ft.-lb)

3. Operate the relief valve once more to confirm that the

pressure that has been set is stabilized.

Circuit

Relief valve

Pressure detection port

Port

Size

Boom

R1

A1

G1/4

Arm

R2

A2

Dozer blade

R3

A3

A3

R3

2DAG05Z 

1

2

SERVICE DATA

PERFORMANCE CRITERIA

5

2

PERFORMANCE CRITERIA

2D0AX002

Hydraulic oil pressure (Slew)

Measurement method

• Engine:

Maximum R.P.M.

• Hydraulic oil temp.: 50°C to 60°C (122°F to 140°F)
• Install a pressure gauge on the pressure detection

port. Operate the hydraulic circuit to be tested, and
measure the relief pressure. (Secure the upper struc-
ture so that it cannot slew in the direction to be mea-
sured.)

Adjustment method

The set pressure cannot be adjusted while the relief
valve is attached to the slew motor. If adjustments need
to be made, replace the relief valve assembly.

Hydraulic oil pressure (Pilot pressure)

Measurement method

• Engine:

Maximum R.P.M.

• Hydraulic oil temp.: 50°C to 60°C (122°F to 140°F)
• Install a pressure gauge on the pressure detection

port to measure the relief pressure.

Adjustment method

1. Loosen the locknut (1), and turn the setscrew (2) to

adjust the set pressure.

• Turn the setscrew clockwise to increase the set

pressure.

• Turn the setscrew counterclockwise to decrease

the set pressure.

2. In order to keep the setscrew (2) from turning after

the pressure has been adjusted, tighten the locknut
(1) while holding the setscrew (1) firmly in place.

Locknut: 15.7 N·m (11.6 ft.-lb)

3. Operate the relief valve once more to confirm that the

pressure that has been set is stabilized.

Circuit

Relief valve

Pressure detection port

Port

Size

Right slew

SR1

A3

G1/4

Left slew

SR2

Relief valve

Pressure detection port

Port

Size

PRB

PB

G1/4

A3

R3

SERVICE DATA

PERFORMANCE CRITERIA

6

2

PERFORMANCE CRITERIA

2D0AX002

Travel speed (5 revs.)

• Engine:

Maximum R.P.M.

• Hydraulic oil temp.: 50°C to 60°C (122°F to 140°F)
• Measuring attitude: Excavator body to be raised using

both the hoe attachment and the dozer blade

• Set crawler belts in motion. Starting after one full revo-

lution, measure the time required for five revolutions.
(To measure speed after it has stabilized.)

Travel speed (10 m)

• Engine:

Maximum R.P.M.

• Hydraulic oil temp.: 50°C to 60°C (122°F to 140°F)
• Measuring attitude: Traveling
• Drive 5 meters (16.4 ft.) first and then start measuring

the time required for the machine to travel another 10
meters (32.8 ft.). Do this on level ground.

 Traveling attitude

With the bucket in a no-load state and the boom raised,
fully extend the arm and bucket cylinders and adjust the
hoe attachment so that its lowest part is even with the ex-
cavator’s minimum ground clearance level. The dozer
blade should not be touching the ground.

Straight-ahead traveling

• Engine:

Maximum R.P.M.

• Hydraulic oil temp.: 50°C to 60°C (122°F to 140°F)
• Measuring attitude: Traveling
• Starting from an approach of 5 meters (16.4 ft.), drive

the excavator in a turn for 10 meters (32.8 ft.), and then
measure the distance, X (from the 5-m point). Do this
on level ground.

SERVICE DATA

PERFORMANCE CRITERIA

7

2

PERFORMANCE CRITERIA

2D0AX002

Natural travel drop

• Engine:

Stopped

• Hydraulic oil temp.: 50°C to 60°C (122°F to 140°F)
• Inclination angle:

15°

• Measuring attitude: Fully  extend  the  boom,  arm,  and

bucket cylinders. Completely retract the dozer blade
cylinder.

• Leave the excavator parked at an angle for 5 minutes

and then measure the amount of natural drop.

Slew time

• Engine:

Maximum R.P.M.

• Hydraulic oil temp.: 50°C to 60°C (122°F to 140°F)
• Measuring attitude: With the bucket in a no-load state,

completely retract the arm cylinders, and then fully ex-
tend the bucket cylinder and make adjustments so that
the boom foot pin and bucket pin are at the same
height.

• Set the upper structure in motion, wait 1 rotation, and

then measure the time required for the next 2 rotations.

Overrun when slewing stops

• Engine:

Maximum R.P.M.

• Hydraulic oil temp.: 50°C to 60°C (122°F to 140°F)
• Measuring attitude: Same as that for measuring slew

time

• Draw matching marks on the outer race of the slew

bearing and the lower frame at points rotated exactly
180° from the starting point. With the hoe attachment
in a no-load state, slew another 180 degrees, at which
point the operation lever should return back to neutral.
Measure the difference between the position marks
and the point at which the hoe attachment was
stopped.

Natural slew drop

• Engine:

Stopped

• Hydraulic oil temp.: 50°C to 60°C (122°F to 140°F)
• Inclination angle:

15°

• Measuring attitude: Same as that for measuring slew

time

• Rotate the upper structure so that it is directly abeam

of the grade. Next, draw positional marks on the outer
race of the slew bearing and on the lower frame. Mea-
sure the amount of distance that opens up between
the marks after 5 minutes have passed.

 

 

 

 

 

 

 

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